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Test particle simulation method for analyzing constraint performance of high-energy particles in Tokamak

A technology of tokamak and simulation method, applied in the direction of design optimization/simulation, etc., can solve problems such as device damage, and achieve the effects of efficient analysis, high calculation efficiency, and strong numerical stability

Active Publication Date: 2020-06-09
DALIAN UNIV OF TECH
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Problems solved by technology

However, if these high-energy particles are not well confined, they will hit the walls of the tokamak and cause serious damage to the device

Method used

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  • Test particle simulation method for analyzing constraint performance of high-energy particles in Tokamak
  • Test particle simulation method for analyzing constraint performance of high-energy particles in Tokamak
  • Test particle simulation method for analyzing constraint performance of high-energy particles in Tokamak

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Embodiment Construction

[0016] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.

[0017] The tokamak device is a ring-shaped magnetic confinement device, and its structure is as follows: figure 1 As shown, high-energy particles move at high speed inside the device. First, according to the real magnetic field configuration, a three-dimensional cylindrical coordinate system (R, ζ, Z) is established to construct a calculation grid, such as figure 2 As shown in , the calculation grid includes both the main plasma region in the core and the vacuum region between the plasma and the wall. image 3 It is the relationship diagram of the initial particle density, energy, and safety factor with the normalized small radius. According to the actual situation, the initial particle distribution, initial equilibrium magnetic field and disturbance electromagnetic field are loaded. Next, according to the particle g...

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Abstract

The invention discloses a test particle simulation method for analyzing the confinement performance of high-energy particles in Tokamak, and belongs to the field of magnetic confinement controlled nuclear fusion. The method comprises the following steps: firstly, dividing a two-dimensional triangular mesh according to input parameters such as a balanced magnetic field and a plasma profile; secondly, loading high-energy particle information, which comprises information such as position and speed, into a phase space; then, according to the full-orbit equation and the guide center orbit equation,the evolution of the particles along with time is solved, and a Monte Carlo method is adopted in the collision module; and finally, outputting information of all particles, and outputting informationsuch as particle distribution, energy flow and current after the information is processed by the post-processing module. According to the method, physical processes such as transportation and loss ofhigh-energy particles can be simulated, the calculation efficiency is high, the numerical stability is high, and the method is a stable and efficient numerical simulation method.

Description

technical field [0001] The invention belongs to the field of magnetic confinement controlled nuclear fusion, relates to the numerical simulation of the discharge of a tokamak device in the field of magnetic confinement controlled nuclear fusion, and in particular to a test particle simulation method for analyzing the confinement performance of high-energy particles in the tokamak. Background technique [0002] With the rapid development of human society, energy issues have become an important problem facing all mankind. Traditional fossil energy is increasingly depleted, and a large amount of toxic and harmful substances will be produced during use; new energy sources such as wind energy, water energy, and solar energy cannot replace fossil energy well due to their strict requirements on factors such as geographical environment. In contrast, controlled nuclear fusion energy is considered to be an ideal new energy source for mankind because of its many advantages such as wide...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/25
Inventor 王正汹王丰赵睿马好杰
Owner DALIAN UNIV OF TECH
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